The Audio Master AV300USB installation power amplifier delivers 300 W RMS and supports 100 V, 70 V, or 4–16 Ω operation. It features six zones with separate volume control, as well as independent adjustment for each input. The built-in FM tuner, USB port, SD card slot, and Bluetooth support music playback, and the unit can also be operated with a remote control.

The amplifier has three microphone inputs, two AUX inputs, and a LINE-OUT. The MIC1 input can be set to priority mode. The bass, treble, and master volume controls let you adjust the sound, while the fan is part of the cooling system. The ALARM SERVICE notification system sounds an alert if a fault interrupts the amplifier’s output.

• Type: Installation power amplifier
• Power at 100 V: 300 W RMS
• Class technology: AB
• Zones: 6
• Output operation: 100 V, 70 V, or 4–16 Ω
• Radio: FM
• Playback: USB, SD card, MP3, and Bluetooth
• Microphone inputs: 3
• AUX inputs: 2
• Output: LINE-OUT
• MIC1 input: Priority mode
• Sound controls: Bass, treble, and master volume
• Frequency response: 80 Hz–18 kHz
• THD: <1%
• Cooling system: Fan
• Protections: Short circuit, delayed activation, overheating, overload, and DC faults
• Remote control: Yes
• Width: 482 mm
• Height: 88 mm
• Depth: 360 mm
• Weight: 12 kg